Challenges in Mobile Multimodal Application Architecture W3C - - PowerPoint PPT Presentation

ACCESS Proprietary c ACCESS 2007

Challenges in Mobile Multimodal Application Architecture

W3C Multi-modal Workshop, November 2007, Fujisawa, Japan

Toshihiko Yamakami

Toshihiko.Yamakami@access-company.com

CTO Office, ACCESS

Challenges in Mobile Multimodal Application Architecture – p.1/12

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Outline

• History of Mobile Multimodal Industrial Efforts
• Landscape of Mobile Multimodal Applications
• Challenges
• No Conclusion

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History of Mobile MM

• Industrial Efforts
• WAP Forum started to investigate MM in

2000

• OMA (following WAP) agreed an work item

in 2002(MMMD)

• OMA completed its architectural work in

2005

• OMA decided to terminate its work without

Tech specs in 2006

• (Pending termination in OMA)

MMMD: MultiModal and MultiDevice

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Wireless Telephony

• Expecting rapid shift towards mobile data services

China USA Russia India Brazil Japan Country Users (Million) 100 200 300 400 500 2000 2001 2002 2003 2004 2005 2006 2000 4000 6000 8000

PC mobile

PC mobile

Top Subscribers PC and Mobile In Japan

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Landscape

• Capability Improved for MM
• Increased Network Bandwidth (IMT-2000

users 81% in Japan)

• CPU and Memory Increased (sub-GHZ,

GByte)

• Linux emerged (LiMo, Open Handset

Alliance, ...)

Challenges in Mobile Multimodal Application Architecture – p.5/12

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Retrospective View (general)

• Mobile Data Services need Spiral Evolution
• Interaction among Services, Content, and

End-users

• Spiral allows gradual capability improvement

through use

• Two-Wheel Efforts necessary
• Capability Evolution
• Ease of Authoring
• Many believed that mobile fits MultiModal ...

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Obstacles in Mobile MM Road

• Challenges in Encapsulation
• Challenges in multimodal Contexts
• Challenges in Content Authoring

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Underlying Platforms

• tight-bound-ness to the underlying capabilities
• failed generalization bypassing the real issues
• failed design without specific underlying

knowledge

• rapid progress of env threats the higher-layer

standardization

• How can we unbind these bonds?

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General vs. Specific

• Bridge too far?
• Single application with multimodal

interactions with a user

• Single application with different modal

interactions to different users

• Single application with single modality with a

user at a time (different contexts provide different modal interactions with the user)

• Gap to be filled between general framework and

workable solution

• Less support from the PC Internet

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Authoring

• Intuitive Difficulties?
• Who are rigorous authors?
• Authoring systems support?
• Authoring is always a pain ...
• Obstacles for general MM
• Obstacles for mobile MM (more authoring

and usability test pains)

• Event sequence among multiple entities will be a

nightmare

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Retrospective View (case)

• Contradicting Observations
• Sustained Enthusiasm
• Little or Isolated Contributions

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Conclusion

• No Conclusion
• No Silver bullet to the Challenges (seems like)
• Industry will be pleased to see mobile

Multimodal Apps

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